COMPATIBILITY: The sleek new Apple Double-Lap Adjustable Wavy Nylon Strap is compatible with the Apple iwatch 42/44/45/49mm SE/Ultra 8 7 6 5 4 3 2 1 series watches. (Excludes Apple Watch) HIGH QUALITY MATERIAL： Made of nylon material, it is very soft and comfortable after wearing, can provide soft cushioning, ensure that it is always soft, sports breathable and light. ADJUSTADLE SIZE：The 42/44/45/49mm ring wristband is suitable for wrists measuring 130mm-205mm/5.1-8.1 inches, with double lap adjustment personalized adjustment for a perfect fit and fits most wrists. These straps also improve airflow and prevent sweat build-up. EASY TO INSTALL AND REMOVE: The replacement sport watch band comes with watch lugs on both ends, which locks onto the watch interface precisely. Easy and direct installation and one button removal. PERFECT DESIGN: The innovative wavy nylon woven strap ensures a perfect skin-friendly fit. The fastener's sleek double-lap adjustment design, soft and breathable nylon weave, smooth surface, good elasticity, for a stylish sports look.